--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/JavaScriptCore/interpreter/Interpreter.h Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) 2008 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ * its contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef Interpreter_h
+#define Interpreter_h
+
+#include "ArgList.h"
+#include "FastAllocBase.h"
+#include "JSCell.h"
+#include "JSValue.h"
+#include "JSObject.h"
+#include "Opcode.h"
+#include "RegisterFile.h"
+
+#include <wtf/HashMap.h>
+
+namespace JSC {
+
+ class CodeBlock;
+ class EvalExecutable;
+ class FunctionExecutable;
+ class JSFunction;
+ class JSGlobalObject;
+ class ProgramExecutable;
+ class Register;
+ class ScopeChainNode;
+ class SamplingTool;
+ struct CallFrameClosure;
+ struct HandlerInfo;
+ struct Instruction;
+
+ enum DebugHookID {
+ WillExecuteProgram,
+ DidExecuteProgram,
+ DidEnterCallFrame,
+ DidReachBreakpoint,
+ WillLeaveCallFrame,
+ WillExecuteStatement
+ };
+
+ enum { MaxLargeThreadReentryDepth = 256, MaxSmallThreadReentryDepth = 32 };
+
+ class Interpreter : public FastAllocBase {
+ friend class JIT;
+ friend class CachedCall;
+ public:
+ Interpreter();
+
+ RegisterFile& registerFile() { return m_registerFile; }
+
+ Opcode getOpcode(OpcodeID id)
+ {
+ #if ENABLE(COMPUTED_GOTO_INTERPRETER)
+ return m_opcodeTable[id];
+ #else
+ return id;
+ #endif
+ }
+
+ OpcodeID getOpcodeID(Opcode opcode)
+ {
+ #if ENABLE(COMPUTED_GOTO_INTERPRETER)
+ ASSERT(isOpcode(opcode));
+ return m_opcodeIDTable.get(opcode);
+ #else
+ return opcode;
+ #endif
+ }
+
+ bool isOpcode(Opcode);
+
+ JSValue execute(ProgramExecutable*, CallFrame*, ScopeChainNode*, JSObject* thisObj, JSValue* exception);
+ JSValue executeCall(CallFrame*, JSObject* function, CallType, const CallData&, JSValue thisValue, const ArgList&, JSValue* exception);
+ JSObject* executeConstruct(CallFrame*, JSObject* function, ConstructType, const ConstructData&, const ArgList&, JSValue* exception);
+ JSValue execute(EvalExecutable* evalNode, CallFrame* exec, JSObject* thisObj, ScopeChainNode* scopeChain, JSValue* exception);
+
+ JSValue retrieveArguments(CallFrame*, JSFunction*) const;
+ JSValue retrieveCaller(CallFrame*, JSFunction*) const;
+ void retrieveLastCaller(CallFrame*, int& lineNumber, intptr_t& sourceID, UString& sourceURL, JSValue& function) const;
+
+ void getArgumentsData(CallFrame*, JSFunction*&, ptrdiff_t& firstParameterIndex, Register*& argv, int& argc);
+
+ SamplingTool* sampler() { return m_sampler.get(); }
+
+ NEVER_INLINE JSValue callEval(CallFrame*, RegisterFile*, Register* argv, int argc, int registerOffset, JSValue& exceptionValue);
+ NEVER_INLINE HandlerInfo* throwException(CallFrame*&, JSValue&, unsigned bytecodeOffset, bool);
+ NEVER_INLINE void debug(CallFrame*, DebugHookID, int firstLine, int lastLine);
+
+ void dumpSampleData(ExecState* exec);
+ void startSampling();
+ void stopSampling();
+ private:
+ enum ExecutionFlag { Normal, InitializeAndReturn };
+
+ CallFrameClosure prepareForRepeatCall(FunctionExecutable*, CallFrame*, JSFunction*, int argCount, ScopeChainNode*, JSValue* exception);
+ void endRepeatCall(CallFrameClosure&);
+ JSValue execute(CallFrameClosure&, JSValue* exception);
+
+ JSValue execute(EvalExecutable*, CallFrame*, JSObject* thisObject, int globalRegisterOffset, ScopeChainNode*, JSValue* exception);
+
+#if ENABLE(INTERPRETER)
+ NEVER_INLINE bool resolve(CallFrame*, Instruction*, JSValue& exceptionValue);
+ NEVER_INLINE bool resolveSkip(CallFrame*, Instruction*, JSValue& exceptionValue);
+ NEVER_INLINE bool resolveGlobal(CallFrame*, Instruction*, JSValue& exceptionValue);
+ NEVER_INLINE bool resolveGlobalDynamic(CallFrame*, Instruction*, JSValue& exceptionValue);
+ NEVER_INLINE void resolveBase(CallFrame*, Instruction* vPC);
+ NEVER_INLINE bool resolveBaseAndProperty(CallFrame*, Instruction*, JSValue& exceptionValue);
+ NEVER_INLINE ScopeChainNode* createExceptionScope(CallFrame*, const Instruction* vPC);
+
+ void tryCacheGetByID(CallFrame*, CodeBlock*, Instruction*, JSValue baseValue, const Identifier& propertyName, const PropertySlot&);
+ void uncacheGetByID(CodeBlock*, Instruction* vPC);
+ void tryCachePutByID(CallFrame*, CodeBlock*, Instruction*, JSValue baseValue, const PutPropertySlot&);
+ void uncachePutByID(CodeBlock*, Instruction* vPC);
+#endif // ENABLE(INTERPRETER)
+
+ NEVER_INLINE bool unwindCallFrame(CallFrame*&, JSValue, unsigned& bytecodeOffset, CodeBlock*&);
+
+ static ALWAYS_INLINE CallFrame* slideRegisterWindowForCall(CodeBlock*, RegisterFile*, CallFrame*, size_t registerOffset, int argc);
+
+ static CallFrame* findFunctionCallFrame(CallFrame*, JSFunction*);
+
+ JSValue privateExecute(ExecutionFlag, RegisterFile*, CallFrame*, JSValue* exception);
+
+ void dumpCallFrame(CallFrame*);
+ void dumpRegisters(CallFrame*);
+
+ bool isCallBytecode(Opcode opcode) { return opcode == getOpcode(op_call) || opcode == getOpcode(op_construct) || opcode == getOpcode(op_call_eval); }
+
+ void enableSampler();
+ int m_sampleEntryDepth;
+ OwnPtr<SamplingTool> m_sampler;
+
+ int m_reentryDepth;
+
+ RegisterFile m_registerFile;
+
+#if ENABLE(COMPUTED_GOTO_INTERPRETER)
+ Opcode m_opcodeTable[numOpcodeIDs]; // Maps OpcodeID => Opcode for compiling
+ HashMap<Opcode, OpcodeID> m_opcodeIDTable; // Maps Opcode => OpcodeID for decompiling
+#endif
+ };
+
+} // namespace JSC
+
+#endif // Interpreter_h